• Journal of Nutrition and Health
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• v.18 no.3
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• pp.194-200
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• 1985

The purpose of this study was to investigate sodium intake and protein metabolism for pregnant women in Korea. The relationship between salt consumption and hypertension, electrolyte changes in pregnancy, and the tendency of weight gain of pregnant women were also examined. The dietary survey and twelve or twenty-four hour's urine collection was performed in this study. The subjects were pregnant women who came to gynecology clinic for prenatal care from July to August in 1984. The results were as follows: 1) Intakes of calorie and iron of Korean pregnant women were 2,036 Kcal and 16mg per day per person. The calorie composition consists of 65% carbohydrate, 16% protein, and 19% lipids. The average level of all nutrients was about 87% of Korean Recommended Dietary Allowances. 2) The sodium intakes in pregnant women estimated by dietary survey was 318.6 mEq Na (7,966 mg Na), which is equivalent to 20.2 g NaCl. 3) Daily sodium excretion was 112.5 mEq per liter, that is equal to 147.4 mEq. Potassium excretion was 24.95 mEq per liter and creatinine excretion was 594.0 mg per day. 4) There were statistically significant correlations between sodium intake and the excretions of sodium, potassium and creatinine. The blood pressure was positively correlated with sodium intakes. As sodium and potassium ratio was increased, systolic blood pressure and diastolic blood pressure were also significantly increased 5) Urinary nitrogen and creatinine ratio known to be reliable index for nutritional status of protein was 5.5 : 1. These values were comparable to the values in American pregnant women. 6) The weight gain during the pregnancy was examined. There was little weight gain during the first trimester, because of nausea, vomit and decrease of appetite. The weight gain during the second trimester was 4.9Kg, and 11.1Kg for third trimester.

• Health Policy and Management
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• v.28 no.2
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• pp.128-137
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• 2018

Background: This study aims to utilize Organization for Economic Cooperation and Development (OECD) data to identify macroscopic determinants of health at national level and to utilize it in health policy development through comparison and analysis with Korea. Methods: The potential years of life lost (PYLL) were used as dependent variables and 19 indicators were selected as health determinants to be independent variables based on the results of previous studies. Data analysis was done using SAS ver. 9.4 package (SAS Institute Inc., Cary, NC, USA) and model used in technical statistics concerning PYLL by countries, multi-linearity test between independent variables and OECD economic studies were modified and used. Results: From 1994 to 2012, the average PYLL for OECD countries was 4,262.9 years, the highest in Estonia and the lowest in Iceland. As a result of the analysis using the fixed effect model, the significant variables affecting PYLL were four variables: gross domestic product, nitric oxide, tobacco consumption, and number of doctors. The health determinants that had more influence on the PYLL of Korean people compared to other OECD countries were tobacco consumption, calorie consumption, fat intake and total health expenditure. Conclusion: In order to effectively reduce unnecessary deaths, we must continue to strengthen our smoking policy and nutrition policies such as calorie and fat intake. It is necessary to prevent the increase of total health expenditure due to the increase in the prevalence of chronic diseases and to strengthen the public health aspect.

• Preventive Nutrition and Food Science
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• v.22 no.1
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• pp.45-49
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• 2017

The anti-obesity effects of yeast hydrolysate (YH) supplementation (1.0 g/d) have already been demonstrated. We investigated whether a low dose of YH (0.5 g/d, YH-500) also has the anti-obesity effects. Thirty obese women were randomly assigned to the control or YH-500 groups. After 8 weeks, weight and body mass index were significantly reduced by the YH treatment (0.5 g/d) (P<0.05). The YH-500 group lost a significant amount of body fat after the 8-week treatment: fat mass 25.9 kg (baseline) versus 23.8 kg (8th week), P<0.01; fat mass ratio 38.8% (baseline) versus 36.5% (8th week), P<0.05. The YH-500 group showed a significant reduction in calorie intake during the 8-week treatment (P<0.001). The control group wanted to eat much more food (P<0.05) and sometimes thought about eating more often compared with the YH-500 group (P<0.05). Whereas the control group showed a slightly increased sweet preference, the YH-500 group showed a significant reduction in sweet preference (P<0.05). In conclusion, low dose YH supplementation (0.5 g/d) may induce a reductions in weight and body fat in obese women via the reduction of calorie intake.

• Journal of Community Nutrition
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• v.8 no.4
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• pp.200-206
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• 2006

A survey was conducted to investigate the preferences of wedding reception food, food consumption and its nutrient density, and the factors that influence nutrient density, in order to obtain baseline data for the development of an educational program on dining out. Subjects included 105 male and female adults who attended a wedding ceremony and consumed wedding reception food in the Chungbuk area between August and September 2004 and interviewed using a questionnaire. 63.0% of the subjects responded that they over-ate at the reception. 20.5% reported that they skipped the meal before the reception. The respondents who skipped the meal had more calorie intakes (899kcal) than those who did not (800kcal). In food preferences, noodles (51.0%), watermelon (47.0%), rice cake (39.0%), sweet and sour pork (38.0%), potato noodles stir-fried with vegetables (37.0%), beef rib soup with cooked rice (37.0%), bulgogi (35.0%), braised beef ribs (35.0%), fried shrimp (32.0%) were higher percentages in order. People preferred grain, meat and fatty food to vegetables. Total calorie intake from the reception foods were 881 kcal for males, and 769kcal for females. In evaluation of nutrient density, the density of calcium, vitamin A, vitamin C and dietary fiber did not meet the standard of the recommended intake. Especially, vitamin C and dietary fiber were less than 50% of the recommended level. The main factors that influence the nutrient density were household incomes, occupations, marital status, and total fat consumed. In conclusion, an educational program should be developed and offered to improve their dietary quality.

• Journal of Korean Medicine for Obesity Research
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• v.5 no.1
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• pp.121-131
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• 2005

During last few decades dietary guidelines for the weight management mainly have focused on a low-fat, high carbohydrate diet. Carbohydrate was supposed to be low-dense, highly satiating as well as it affects little on the lipogenesis. Although low-fat diet has significant weight-reducing effect, the loss was modest and usually regained after cessation of the diet. Furthermore, low-fat, modest-carbohydrate diet did not impact on the ever increasing rates of overweight and obesity. Alternative approaches include low-carbohydrate diet, high-carbohydrate diet and low-glycemic index diet. Although none of above mentioned diet have sufficient evidence for standard weight management diet, short-term efficacy and safety are being approved continuously. Low-carbohydrate diet contains less than 45% of carbohydrate in daily energy consumption, it is claimed to have more satiating effect and to improve metabolism. However, low compliance due to the limitation of food choice should be considered on prescribing the diet. High-carbohydrate which contains 90% of carbohydrate in total daily energy consumption, is effective in providing satiety and lowering total calorie intake and cholesterol. On the other hand, nutritional unbalance should be took into account. Low-glycemic index diet is based on the theory that contemporary diet contains significantly less fiber and unrefined carbohydrate, therefore insulin secretion is disturbed. Because low glycemic index food slowly increase blood glucose and insulin level, it induces much satiating effect and may decrease calorie ultimate intake. However, poor standardization of glycemic index is one of the main obstacle for the diet to be applied in the clinic. Meanwhile, high fructose food and beverage should be discouraged because it has little satiating effect and may cause insulin resistance. High fiber food is another recommendation for healthy, lean diet.

• Nutrition Research and Practice
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• v.16 no.2
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• pp.205-216
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• 2022

BACKGROUND/OBJECTIVES: While many obesity studies have pointed out the importance of meal regularity, few have conducted empirical analyses using data from food diaries. We examined the association between meal regularity (i.e., meal time regularity [MTR] and calorie intake regularity [CIR]) and weight loss. SUBJECTS/METHODS: We collected food diary data from 637 women who had participated in commercial weight loss programs for 28-168 days (4-24 weeks). This study defined "meal regularity" in terms of two concepts: MTR and CIR. MTR refers to how regularly people eat their meals (i.e., at certain times each day), whereas CIR refers to how regularly people consume a certain amount of calories at each meal. We conducted multiple regression analyses. RESULTS: MTR (model 1: β = -2,576.526, P < 0.001; model 2: β = -1511.447, P < 0.05; model 3: β = -1,721.428, P < 0.05) and CIR (model 1: β = -1,231.551, P < 0.01; model 2: β = -2,082.353, P < 0.001; model 3: β = -1,343.490, P < 0.01) turned out to be significant determinants of the amount of weight loss in breakfast, lunch, and dinner contexts. While meal regularity (i.e., MTR and CIR) was significantly associated with weight loss, daily calorie intake from meals was not significantly associated with the amount of weight loss (model 1: β = 0.13, P > 0.05; model 2: β = 0.11, P > 0.05; model 3: β = 0.14, P > 0.05). Subjects who consumed an equal amount of calories per meal throughout the day lost more weight than those who did not (model 4: β = -3,675.51, P < 0.001). CONCLUSIONS: Eating each meal (i.e., breakfast, lunch, and dinner) at a certain time every day may increase weight loss success. Also, consuming the same amount of calories at each meal may help weight loss success.

• Journal of the Korean Society of Food Culture
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• v.15 no.4
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• pp.313-323
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• 2000

Although it is rapidly increasing the number of day-care centers in Korea, the quality of food and nutrition services is not improved sufficiently. The purpose of this study was to investigate the nutrition and health status of children in day-care center. Menus for lunch of 253 centers were collected and the content of nutrients was analyzed. Nutrient intakes from lunch and snacks of 90 children were investigated using weighing method and those from breakfast and dinner by 24-hour recall method surrogated from their mothers. Anthropometric indices of height, weight, skinfold thickness, the ratio of fat were measured. The lunch menus for children contained $437.0{\pm}138.9\;Kcal$, $17.6{\pm}6.7gr$ protein, $153.9{\pm}87.7mg\;Ca$, $3.63{\pm}1.6mg\;Fe$, $164.5{\pm}158.2RE\;Vit\;A$. and $4.46{\pm}3.04mg\;Vit\;B_1$. Energy, Ca and Fe supplied were below one third of RDAs. Mean daily calorie intake of children aged 3 years was $1303.0{\pm}474.0Kcal/day$, $1322.3{\pm}442.4Kcal$ in aged four, $1307.0{\pm}545.9Kcal$ in aged five and $1497.1{\pm}93.5kcal$ in six year of age. Intake of iron, vitamin A and vitamin $B_1$ were below RDAs.

• Journal of Nutrition and Health
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• v.26 no.1
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• pp.76-88
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• 1993

Maternal body weight, skinfold thickness and circumference measurements were examined in 23 lactating women and 10 nonlactating women longitudinally from 1 week to 12 weeks postpartum. The dietary intakes of Korean lactating and nonlactating women were measured by 24-hour recall method and effects of maternal energy intake on body weight change were analyzed by Pearson correlation. The mean daily energy intake of breast-feeding(BF, n=12), combination of breast and formula-feeding (CF, n=11), and formula-feeding (FF, n=10) mothers were 1941kcal, 187kcal and 1727kcal, respectively. A significant decrease in weight was observed at all group. Weight losses at 12 weeks of postpartum in BF, CF and FF motheres were 3.18kg, 3.91kg and 5.15kg respectively. Weight losses increased as calorie intake decreased (${\gamma}$2=0.3803, p<0.05). The skinfold thickness and circumferences on all regions were decreased significantly except triceps and upper arm circumferences. However, there were no significant differences between lactating and nonlactating women. Anthropometric measurements decreased at the trunk but not at the limbs. Weight change was significantly correlated with changes of the scores for proximal circumference (${\gamma}$2=0.4999, p<0.05). There results suggest that lactation does not promete weight loss in well-nourished women and that the Korean RDA for energy in lactation may be too high.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.1
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• pp.1-12
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• 1990

To investigate effects of ethanol and dietary fat on growth and bichemical indices of liver tissue and blood in rats 40 male rats of Sprague-Dawley wtrain weighing about 160g were divided into 5 groups (low-fat diet group ethanol-administered low-fat diet group high-fat diet group ethanol-administered high-fat diet group and commercial diet group) and fed expe-rimental diets for 8 weeks. Ethanol-administered groups consumed ethanol corresponding to 22 cal% which was considered as moderate drinking. Neither the ethanol intake nor the dietary fat level affected calorie intake. Nonetheless the low-fat diet group with ethanol had the lowest growth rate and 2-fold increase in the concentration of plasma triglyceride. There was no effect of ethanol and dietary fat level on contents of protein lipid and lipid composition of liver tissue. The level of lipid peroxide of liver tissue tended to be increased by ethanol intake but the increase was statistically insignificatnt. The low-fat ethanol group had lowered hepatic mitochondrial respiration rate and deformed structure of mitochondria of hepatocytes.

• Journal of the Korean Society of Food Culture
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• v.14 no.5
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• pp.517-527
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• 1999

The health, anthropometry, food habits, food intake frequency and nutrition intake of 747(219 men and 528 women) elderly people living in Inchon were investigated. Mean BMI, WHR, triceps skinfold thickness, BIA, blood pressure of the subjects were 23.4, 1.0, 15.6mm, 28.6%, 137.5/78.8mmHg in men and 24.9, 0.87, 22.6mm, 36.2%, 130.8/73.8mmHg in women respectively. Over the half of the subjects perceived themselves unhealthy and 86.2% of the elderly suffered from one or more illness. Ratios of the smoking and the drinking elderly were 40%, 43% in men and 12%, 11% in women. The major reason to stop smoking or drinking was the concern about their health. Food habit score of the subjects was relatively high (14.45/18.0) but food intake frequency score were relatively low (21.18/33.0) except the food groups of cereal & grain, white vegetable and sweets. The foods consumed by the elderly were very limited in quality and also in quantity. The daily intakes of calorie, protein, iron, vit. B1, niacin and vit. C were less than 2/3 of RDA and the amounts of calcium, vit. A and vit. B2 consumption were less than 1/2 of RDA.